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Articles 1 - 4 of 4
Full-Text Articles in Systems and Integrative Physiology
Metabolic Transitions In Embryos Of Artemia Franciscana: Regulation And Consequences For Oxidative Stress, Daniel Anthony Arabie
Metabolic Transitions In Embryos Of Artemia Franciscana: Regulation And Consequences For Oxidative Stress, Daniel Anthony Arabie
LSU Doctoral Dissertations
Embryos of Artemia franciscana survive harsh conditions in diapause and anoxia-induced quiescence for years by undergoing deep metabolic transitions. I investigated the relationship between phosphorylation of pyruvate dehydrogenase (PDH) and carbon flux to the tricarboxylic acid (TCA) cycle during metabolic depression. The difference in catalytic activity of the PDH complex (PDC) in maximally phosphorylated and dephosphorylated samples was 16.5-fold. Western blot analysis confirmed the changes in phosphorylation of PDH. Analysis of PDH expression in diapause and post-diapause embryos via phospho-PDH showed no significant differences. Investigation of post-diapause embryos under anoxia showed that phosphorylation of PDH decreased and activated the enzyme. …
Cold Tolerance, Diapause And Winter Survival Of The Brown Marmorated Stink Bug (Halyomorpha Halys), Naomi Sibayan
Cold Tolerance, Diapause And Winter Survival Of The Brown Marmorated Stink Bug (Halyomorpha Halys), Naomi Sibayan
All Master's Theses
The brown marmorated stink bug, Halyomorpha halys, is native to eastern Asia and is an invasive pest in the United States. Limited research has been done regarding the factors influencing this species’ winter survival within invaded northern regions. Cold tolerance has been previously evaluated in the eastern United States, bot nut within western populations. Winter diapause. Along with any potential links between diapause and cold tolerance remain unstudied. I examined characteristics of cold tolerance, diapause and overwintering sites to evaluate the factors contributing to the winter survival and, ultimately, persistence of this pest within central Washington. This study measured seasonal …
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana: Metabolic Depression, Lea Proteins And Water Stress, Steven C. Handel, Yuvraj Patil, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Leaf C. Boswell, Daniel Moore, Mehmet Toner
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana: Metabolic Depression, Lea Proteins And Water Stress, Steven C. Handel, Yuvraj Patil, Shumin Li, Nilay Chakraborty, Apurva Borcar, Michael A. Menze, Leaf C. Boswell, Daniel Moore, Mehmet Toner
Faculty Research & Creative Activity
Metabolic depression is typically correlated with extended survival of environmental challenge and energy-limitation in early life stages of various invertebrates and vertebrates. Diapause is an ontogenetically-programmed reduction of development and often metabolism seen in many invertebrates. When embryos of Artemia franciscana enter the state of diapause, the overall metabolic depression is estimated to be greater than 99%. These embryos also contain trehalose and express multiple isoforms of Late Embryogenesis Abundant (LEA) proteins, constituents often present in a number of such anhydrobiotic animals. The mRNA levels for LEA proteins are highest in diapause and post-diapause embryos that possess desiccation tolerance, but …
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana : Metabolic Depression, Lea Proteins And Water Stress., Steven Handel, Yuvraj Patil, Shumin Li, Nilay Charkraborty, Arpurva Borcar, Michael Menze, Leaf Boswell, Daniel Moore, Mehmet Toner
Diapause And Anhydrobiosis In Embryos Of Artemia Franciscana : Metabolic Depression, Lea Proteins And Water Stress., Steven Handel, Yuvraj Patil, Shumin Li, Nilay Charkraborty, Arpurva Borcar, Michael Menze, Leaf Boswell, Daniel Moore, Mehmet Toner
Faculty and Staff Scholarship
Metabolic depression is typically correlated with extended survival of environmental challenge and energy-limitation in early life stages of various invertebrates and vertebrates. Diapause is an ontogenetically-programmed reduction of development and often metabolism seen in many invertebrates. When embryos of Artemia franciscana enter the state of diapause, the overall metabolic depression is estimated to be greater than 99%. These embryos also contain trehalose and express multiple isoforms of Late Embryogenesis Abundant (LEA) proteins, constituents often present in a number of such anhydrobiotic animals. The mRNA levels for LEA proteins are highest in diapause and post-diapause embryos that possess desiccation tolerance, but …